Question 19
In a game, each of $A,B,C,D$ wears a shirt numbered $6$, $7$ or $8$. Anyone wearing $7$ always lies, while anyone wearing $6$ or $8$ always tells the truth. Asked for the sum of their four shirt numbers, they reply: A: “28”; B: “27”; C: “26”; D: “25”. Find each person’s shirt number.
